I have a NFS server and a bunch of diskless clients booting from that server using TFTP. They have a read-only root partition mount from the server, and read-write /home mount from the server. Everything what needs to be writable is on tmpfs.

I hacked Gentoo init scripts (/bin/rc) to make it possible.

I'm running Xorg on each of those stations, and it successfully autoconfigures itself, but often with cosmic resolution (like 1600xsomethingbig where it used to be 1024x768). It looks really weird. Different stations have different graphic cards and monitors etc.

How do I set an upper limit of screen resolution used by Xorg? I would like it to still autoconfigure itself within this limit.